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Installing Factory Trailer Brake Controller and DIY Software Update

brotharon

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Hello Forum,

So, I called around to several Houston area dealerships and kept getting quoted ~$700 for the purchase and install of a factory trailer brake controller. This seemed outrageous to me, and so I set out to find information about what all was involved in this installation. In the process of doing this I found a lot of information, and I just wanted to share my experience from start to finish including flashing the software myself in order to add the trailer brake controller to UConnect so that I don't have to go to the dealership for anything.

If you are interested in finding out how you can do this yourself at home and in under 2 hours (even if your neighbors keep dropping by and it is 100 degrees outside) then here we go!

Step 1: is to order the parts from whatever vendor you feel like ordering them from. I have the 12" touchscreen (as you will see in the pictures) and these are the parts that worked for me. Individual mileage may vary, but I think that you should be fine with these unless you have some kind of weird unicorn 1500 that takes special parts or something.

PART LIST (original from staffcurtis, but updated by me):
68277136af trailer tow module $79.07
68309259ac (this is the right one at this time for the 12" and probably others) switch instrument panel $28.69
68346572ab module bracket $1.39
6510468aa x3 nuts $0.61 each
6101946 x3 screw $0.54 each
OBD2 Reader (I used BAFX products OBD2 Bluetooth Reader from Amazon) ~$25
FCA Security Gateway Bypass Module ~$50
AlfaObd (From the app store) ~$50

All in price: ~$237.60 (including the software update)

Step 1: get the parts (If you don't want to do the software yourself, or your local dealer will flash the software for less than $100 you can save some money by taking it in to the dealer for the flash. The advantage to having the AlfaObd and the other hardware is that you can read engine codes and clear errors plus add other software updates besides the trailer. There may be some value in that for some people and not for others. Individual mileage will vary.)

Step 2: Disconnect your negative battery terminal. See pics below. Use a 10mm wrench, or something equivalent.

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Step 3: remove the center stack of the dash. This is not as scary as some people make it out to be. Remove the 2 screws at the top. Place on hand in the cupped area at the top and one at the bottom of the piece. Pull straight out (toward the back of the cab) it will come out, and it is a sturdy piece, you wont break it unless you are being a gorilla. Don't be a gorilla.
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For the connector pictured below I used a very small screwdriver to depress the latch to remove it. You may or may not need to, but I have sausage fingers so I had to. You will have an easier time if you disconnect all of the plugs on the back of the console. It is not a lot of connectors, and it just reduces the chances of damaging wiring or the console...it also makes it much easier to deal with.
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Step 4: Unwrap that sweet connector that is all covered in cloth tape. You will need it to connect to your trailer brake switch later!
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brotharon

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Step 5: Remove the Switch Panel at the bottom of the console. This is where you are going to put your sexy new trailer brake switch, but you need to free it from the confines of blankness in which it currently dwells.
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Step 6: Remove the Blank Button. This was not easy for me, mine was super in there. I used a tiny flathead screwdriver and removed the gloss black upper part of the button (there are 4 tabs, 2 on top, and 2 hidden behind) and then I was able to more easily remove the button, but you may use any method you like. Again, do not be a gorilla, you need the housing to mount your new button in.
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Step 7: Install the trailer brake controller switch. This is pretty easy. Line it up and gently press until the tabs lock into place. This is not a feat of strength, so if it is not going relatively easily, take a look to make sure you removed the blank button first (see above) and repeat.
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brotharon

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Step 8: Remove the plastic cover just above the driver side footwell. There are 2 screws holding it in and 3 or so clips on either side. Basically very similar to the center stack in removal. Just like in the center console you will want to remove all of the plugs. No need to do anything with the pull for the hood release, that can stay in place, just disconnect the plugs.
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Step 9: install the bracket that the trailer brake controller snaps into. This is not too bad. I made use of a long phillips screwdriver to get one of the screws in, but it could have been done without this very unique specialty tool :D
/*Pro Tip: Run the screws into the nutplates before you go to install the bracket. This is not 100% necessary, but will make the installation easier on you.*/

The bracket
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A nutplate
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A nutplate installed!
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The bracket installed. The location is in the driver footwell, right up against the center console. You will see this location in there once you get the cover off and look toward the center of your truck but under the dash. Also, that plug and wires in the picture, it is about to have its day in the sun.
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brotharon

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Step 9: Get that plug free, and snap that brake controller into place
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I used this highly specialized tool to free the plug from the grasp of the cloth tape. You can use any sharp pointy thing you have.
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Now you can get that controller and snap it into the bracket that you installed earlier. There is no additional hardware, it just snaps into place.
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Plug it in and you are 90% of the way there
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Step 10: Put everything back together in the reverse of how you took it apart (do not uninstall things you installed as part of this installation, just put your truck back together) and then marvel at your magnificence!
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brotharon

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Step 11: Software Update using AlfaOBD
Follow all steps to sync your phone/tablet/computer to the Bluetooth/wifi device that you are using (your OBD2 reader, and again I recommend that BAFX one because it worked for me)
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Locate the FCA Security gateway plugs, disconnect them, and plug them into your bypass module. They are driver side to the left of the steering wheel under the dash.
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Now, turn your truck on (remember that you disconnected the battery earlier, and one of the "put it back together implied steps" was to reconnect it)
Open your AlfaOBD app
Select the type of interface you are using and find your device.
Connect to your (OBD Reader) device
Select RAM from the OEM options
Select Ram 1500 from the 1st dropdown
Select Body Computer from the 2nd dropdown
Select Central Gateway Module from the 3rd dropdown
Select connect
Once connected click on the little car with the hood up and navigate all the way to the bottom of this menu
Select "Car Configuration Change"
In the next menu you will need to make the following changes one at a time. Be sure to validate that the change was made by selecting each option and seeing what it is set at according to AlfaOBD after you set the option. The options you need to change and the values for them are as follows:
ITBM/HWM Integrated Trailer Brake Module: Change to "ENABLED"
Trailer selected CSM: Change to "Yes"
Trailer name CSM: Change to "Yes"
Trailer type CSM: Change to "Yes"

/*The information about the settings and the idea that I could do the software update on my own are courtesy of member downsjh*/

My dash display updated immediately and I was able to see the trailer information. Some people have stated that theirs took a few minutes. Your mileage may vary. Turn your truck off, remove your OBD2 reader, and I recommend removing the gateway module bypass.

Now you should have a fully functioning trailer brake controller and 0 trips to the dealership!


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Thank you for your time. I hope that this helps someone save a few pennies like it did for me. If you have anything you would like to add, or steps that I missed (it is possible, I am part gorilla) please feel free to let me know. I am not a mechanic by trade, just by hobby, so go easy on me please :D
 

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41magmag41

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the entire kit is now available on line for anywhere from $189.00 to $259.00. My dealer said install time is one hour, if you get the kit for 189 and add 108, dealer hour charge, you get everything done for 296.00 and have a two year warranty on the it and no gorilla fingers banged up.
 

brotharon

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the entire kit is now available on line for anywhere from $189.00 to $259.00. My dealer said install time is one hour, if you get the kit for 189 and add 108, dealer hour charge, you get everything done for 296.00 and have a two year warranty on the it and no gorilla fingers banged up.
If you can get that price I would recommend you do it. I called 5 dealerships in the houston area and was quoted no less than 700 for parts and labor. I inquired about the price if I sourced the parts, 3 of the dealerships refused to install parts I bought elsewhere. The other 2 dealers quoted me 425 to install the parts and flash the software. It was just not cost effective to have it installed. For the price difference I could buy a new one every year for several years since I own the obd reader and the software, and I would still be money ahead.
Like I said, individual circumstances vary. Comfort levels with diy projects vary as well. Do what you are comfortable with. I can appreciate it either way.
 
R

Rob5589

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Awesome write-up, and I don't even need a TBC! This should definitely be "stickied."
 

Bradleys

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It really is annoying that we need the Gateway Bypass Module to program the ECU.

That extra $50 just eliminates the value out of DIY, unless you think you are going to need to do it several times. I looked on-line expecting to see some used ones trading hands at a discounted rate - but no.

I have the brake controller kit and I will install it this weekend, but flashing the ECU will likely wait.

So annoying...
 

brotharon

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It really is annoying that we need the Gateway Bypass Module to program the ECU.

That extra $50 just eliminates the value out of DIY, unless you think you are going to need to do it several times. I looked on-line expecting to see some used ones trading hands at a discounted rate - but no.

I have the brake controller kit and I will install it this weekend, but flashing the ECU will likely wait.

So annoying...
I agree that it is annoying, but when they get all of the software figured out in the future it may allow you to add things like remote lowering of windows and stuff. If you are in the south Houston area I am certainly willing to help out by letting you come by and use mine for the flash. Otherwise, there may be another person in your area who has one.
 

Hockeygod1225

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Excellent thanks for this it worked perfectly. Mounting the controller box was a pia though. Some of the settings in alpha
Obd were interesting. I am dying to know what masseratti mode is and super Trac pack presets do.
 

travissmithoh

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Hardware installed. Thanks! Does anyone know if I can test it before heading to the dealer for the software update? Does it function as a normal break controller without ingratiation into the dash display?
 

Hockeygod1225

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Hardware installed. Thanks! Does anyone know if I can test it before heading to the dealer for the software update? Does it function as a normal break controller without ingratiation into the dash display?
Save yourself the money and do it yourself with alpha Obd. There is no way to test in advance.
 

travissmithoh

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Can I get a Bypass module shipped to me in two days? Seems like only a couple random websites have them.
 

shaveman

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Dumb question, but can the Tazer DT itself be used as the Security Gateway Bypass Module for these purposes? (for use of AlphaOBD, for example)
 

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